On the 26th of May 1940, the Royal Navy launched Operation Dynamo. Headquartered in the tunnels running under Dover Castle, the aim of the operation was to evacuate the standard British Expeditionary Force from the beaches of Dunkirk in France. The British, French and Belgian forces had been locked in a protracted struggle against the advancing lines of German tanks and troops that made their way through the Netherlands and Luxembourg, cutting through wide swathes of territory and forcing the Allies into a hasty and confused retreat. On the 20th of May, the decision was made to order all British troops to Dunkirk from where they would be evacuated to safety. The operation went on to gain notoriety as the greatest military evacuation in history and was dubbed the Miracle of Dunkirk. Join us this week as we take a closer look at this fascinating story.